Cotton-gin.



No. 839,132. PATEYNTED DBG.2'5, 1.906.'V

J. W. GRAVES.

f COTTON. GIN. Ammoniak FILED ooT.12.41'so4.

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WVVNESSES -I NVENTOR TNI: voulus HE7-sns co., wAsHINoTmy. D. c. l

` .PATENTED DEG. 25, 1906. u, W.' GRAVES.

COTTON GIN. APPLIATION'TILED 00T.1 2. 1904:.

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INVENTOR WITNESSES .Mm Wam/ved,

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.IOHN w. GRAVES, OE COVINGTON, NATIONAL `COTTON COMPANY, CORPORATION OE SOUTH DAKOTA.'

TENNESSEE, ASSICNOE TOINTEE'- OE BOSTON, MASSACHUSETTS, A

COTTON-GIN.

Specication of Letters Patent.

Patented Dec. 25, 1906.

Application md october 12,1`9o4. Serin No. 228,195.

I Covington, in the County of Tipton, State of Tennessee, have invented certain new and useful Improvements in Cotton-Girls, of which the following is a full, clear, and exact l description.

My invention also pertains to the improve- This invention pertains'to the type of cotton-gins in which a ginning-cylinder rotates in conjunction with a smooth auxiliary roll; and the obj ect of my invention is the effecting of means whereby a plurality of such auxiliary rolls may be employed to they end that a larger quantity of seed-cotton may be put through the machine in a given time without danger of choking the same.

ments in forth. y

Referring to the drawings forming part of thisjspecification, Figure 1 is a side elevation of a cotton-gin embodying my invention.

general construction hereinafter `set Fig. 2 is a sectional planview of the same on the'plane X X in Fig. 1. Fig. 3 is a sectional side elevation on the plane Y Y in Fig. 2. Fig. 4 is a sectional elevation o n the plane Z Z in Fig. 43. Fig. 5 is a detail View of one edge of the bearing-box in which oneof the auxiliary rolls is mounted. Fig. 6 is a detail sectional view, Aon a larger scale, of a few of the auxiliary rolls and of a part of the main ginning-cylinder, showing the means for reciprocating said rolls. Fig. 7 is a detail face View of a nu-mber of the plates making up certain of the ginning-teeth of the main gin-cylinder. y

In said drawings the reference-numeral 1 designates the main gin-cylinder keyedupon the shaft 2, revolubly supported in a suitable framework, the periphery of said cylinder being covered with alternate toothed and smooth sections 4 and 3. Surrounding this cylinder for nearly one-half its circumference 4s are a series of auxiliary rolls 10, all butfone of which are constructed to be automatically reciprocated in the diredtion of said cylinders radii for the purpose of permitting the .seed-cotton being acted upon between the main gin-cylinder and any one of said rolls to be automatically released from the latter when more or less completely ginned and to be passed on to the next succeeding roll. In

' be acted upon by a Single machine.

this manner choking of the seed at any roll is prevented, and the action is so divided up among a number of rolls-as to greatly augment the amount of seed-cotton Which can In accomplishing this it is found necessary to have the reciprocating of theauxiliary rolls progressive or Wave-like in a direction opposite to that of the main gin-cylinder. Words, the seed-cotton, having been delivered through a hopper to the upper periphery of said cylinder, is carried by the latters rotation to the first roll 10, said cylinder turning in opposition to the'hands of a watch; but

In other before this roll rises and returns to the cyli amount to a fourth, &c., very quickly choking the machine against the ossibility of further action. The cotton ber which is removed from the seed by the teeth 4 is of course carried on until it meets the blast given by the member 50, `this pipe 50 delivering a powerful air-blast to the cotton in a direction to remove the same from the teeth v4 to the place where it is concentrated and packed.

The oscillating breasts 30 of the lower rolls 10 are perforated, as shown in Figs. 3 and 6, for 4the purpose of permitting the 'cotton-seed to escape which has been practically relieved ofits fiber. The last roll 10* has usually but little work to perform, the great pro ortion of the seed having been denuded and op ed `before itis reached. Said last roll is there ore not made-reciprocative, it serving as the last barrier between the seed-cotton and the fiber-removing devices. Hence the seedcotton reaching this barrier is allowed to remain until its remaining fibers have been combed olf and it can escape through the perforationsin the breast 30a.

To aid the breasts 30 in their function of .tion of this machine is as follows:

40 is the pulley by which power is received, its shaft 41 being provided with a spur-gear 43, meshing with the large gear 44, fixed upon the shaft 2 of the main gin-cylinder. yThe shaft 41 is formed with a reduced extension 42, upon which are fixed two small spur-gears 45, meshing with the idlers 46, which in turn mesh with the large geared wheels 48, loose upon the shaft 2. This gives the said wheels 48 a direction of rotation opposite to that of the main gin-cylinder, and said wheels being provided with the cam members 49 fixed thereto and moving with the wheels in the paths of the antifrictionrolls 19, carried by the bearings of the auxiliary rolls 10, the above-described progressive regviprocation of said rolls is automatically pe ormed. In Fig. 1 two of said cam members are shown upon each wheel 48; but I do not restrict myself to such number, as in some instances a considerably larger number can be advantageously employed and in addition said wheels speed of rotation can be considerably increased. The same cam members 49 by their engagement with the antifriction-roll 26 of the lever 24 and through the agency of the pawl 25 and ratchetwheel 23 on the shaft 21 of the hopper feedgate 22 act to deposit from the hopper 2() into the field of the main gin-cylinder the supplies of seed-cotton synchronous with the actuation of the first auxiliary roll, or

nearly so, and immediately following its discharge. Each auxiliary roll 10 is revolubly mounted in a bearing beam or frame 11,

slidable in suitable supports and pressed toward the cylinder 1 by s rings 17, held in place by the adjusting-rods 16, the nuts on the outer ends of said rods limiting the movements toward the teeth 4. Each roll 10 bears at its rear side against antifrictionrollers 15, journaled in the frames 11, to prevent the roll from springing out of place.

To keep the seed-cotton from crowding in between each roll 10 and the antifrictionrolls 15, I provide the shield 12, coming down quite close to the line of action of the n gin-teeth 4. To have the edge of this'shield the pressure of the seed-cotton without bending back into contact with the roll 10, and so interfering with the latters action, I form it with ribs 13, as shown in cross-section in Fig. 5. This section is along a plane cutting the shield longitudinally and lying in the axis of said roll 10.

In the construction of the ginning-teeth 4 I prefer to form them integral with thin metal sheets 5, mounting the same side by side with a blank sheet 9 between each two, as shown in Figs. 6 and 7. Each said sheet or square of metal 5 and 9 is made with a central notch to form legs or bifurcations straddling the bar 6, fixed upon the main gin-cylinder. Along one face of said bar is a suitable groove, and in the approximate edges of said squares are notched, in to which is thrust the rod 8, by which said squares are securely locked in place, as shown in Fig. 6. By partially or wholly withdrawing said rods from the bars 6 any one or more of the possibly worn or damaged toothed squares or plates may be easily replaced by fresh ones.

I prefer to arrange the toothed plates upon the bars 6 in such a manner that the teeth in one toothed section will be staggered with respect to the teeth in the adjoining sections.

In other words, a fixed point beneath which the main gin-cylinder rotates would alternately overtop a toothed plate in one section and a blank plate in the next, and so on around. In this way the seed acted upon at one point by one set of teeth will be' acted upon at another point by the next following teeth, and will hence be more thoroughly dcnuded of its fiber.

The rubbing-sections 3 are preferably composed of leather sheets of moderate dimensions supported on edge side by side and extending peripherally-that is, parallel with a plane cutting the cylinders axis transversely. The friction surfaces thus presented to the seed-cotton preserve their identity to better advantage, the leather sheets being less liable to lie over somewhat, as in the type where the leather extends in a plane parallel with the cylinder-axis. Said leather friction elements are held. in place by means of the shoulders 7, formed upon the plates 5 and 9 and beneath which the ends of the leather project.

Vhat I claim as my invention and for which I desire Letters Patent is as follows, to wit:

1. In a cotton-gin, the combination of a rotary main gin-cylinder, a plurality of auxiliary rolls, and means operating to move said rolls bodily toward and from the periphery of said cylinder.

2. In a cotton-gin, the combination of a rotary main gin-cylinder, a plurality of auxiliary rolls, and means operating to move said rolls bodily and progressively toward and from the periphery of said cylinder.

IOO

3. In a cotton-gin, the combination of a rotary main gin-cylinder, la plurality of auxiliary rolls, and means operatin `to move said rolls bodilyv and progressive y toward and from the periphery of said cylinder, the direction of progression being in the opposite direction to the rotation of the cylinder.

4. In a cotton-gin, the combination with a revoluble main gin-cylinder, of a plurality of auxiliary rolls, bearings for'said rolls movable in the directions of said cylinders radii, and means-for reciprocating saidbearings in said directions. y

5. In a cotton-gin, the combination with a revoluble main gin-cylinder, of a plurality of auxiliary rolls coperating with said cylinder, bearings for said rolls movable in the direction of said cylinders radii, and means for automatically and progressively moving said bearings toward and from said cylinder.

6. Thel combination with a main gin-cylinder, of a plurality of auxiliary rolls, and oscillating breasts located between said rolls.

7. The combination. with a main gin-cylinder, of a plurality of auxiliary rolls, and oscill'lating flexible breasts located between said rol s.

8. The combination with a main gin-cylinder and an auxiliary roll coperating therewith, of a perforated flexible breast having its free edge close to said roll.

9. In a cotton-gin, the combination of the l main gin-cylinder, a series of auxiliary rolls,

bearings for said rolls yieldingly pressing said rolls toward said cylinder, friction-rolls connected with said bearings, wheels revoluble concentric with said cylinder but rotating oppositely thereto, and cam members carried by said wheels and arranged to engage said friction-rolls and move said auxiliary rolls away from themain gin-cylinder.

10. In a cotton-gin, the combination of the main gin-cylinder, a series of auxiliary i rolls, bearings for said rolls yieldingly pressing said rolls toward said cylinder, frictionrolls connected-With said bearings, wheels revoluble concentric with said cylinder but rotating oppositely thereto, a rotating hopper-feed for delivering seed-cotton to said cylinder, a ratchet-wheel turning said hopper-feed, a pawl and leveroperating said ratchet-wheel, a friction-roll on said lever,`

vention I have hereunto set my hand this 13th day of September, 1904.

JOHN W. GRAVES. Witnesses: v

FRED G. TILToN, A. B.. UPHAM. 

